JP2020021667A - Ion exchanger - Google Patents

Abstract

To provide an ion exchanger capable of evening a flow of cooling liquid in a cooling system of a fuel battery system.SOLUTION: An ion exchanger 2, a liquid-gas separator 3, and a reserve tank 4 are integrally formed on an ion exchanger module 1. The ion exchanger 2 includes an outer cylinder part 11, and an inner cylinder part 12 assembled inside it. Under such a constitution, the cooling liquid flowing from the liquid-gas separator 3 into an outer peripheral flow path 21b on a lower side of the ion exchanger 2 collides with a peripheral wall part 12b of the inner cylinder part 12, flows so as to go around an opposite side of the inner cylinder part 12 while being branched into two directions along the outer peripheral flow path 21b, and flows into a cooling liquid inflow chamber 19 from a flow inlet 24 positioned on the opposite side of the inner cylinder part 12. Then, the cooling liquid flowing to the cooling liquid inflow chamber 19 is rectified via a partition part 15, then flows straight in an inner flow path in a direction of a center axial line C3, and flows into and passes straight to an ion exchange resin housing chamber 16.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an ion exchanger used for a cooling system of a fuel cell system.

  In a fuel cell system, when power is generated by a chemical reaction between hydrogen and oxygen in the fuel cell, the fuel cell generates heat. For this reason, the fuel cell system is provided with a cooling system that circulates a coolant to maintain the fuel cell at a temperature optimal for power generation.

  In the cooling system, when the ion concentration in the cooling liquid increases due to acid generation due to thermal deterioration of the cooling liquid or elution of ions from piping components or the like, the conductivity of the cooling liquid increases. As a result, there is a possibility that electric leakage from the fuel cell to the outside through the cooling liquid. Eventually, the power generation efficiency of the fuel cell may decrease.

  Therefore, conventionally, an ion exchanger is provided in a cooling system of a fuel cell system in order to suppress an increase in ion concentration in a cooling liquid. Such an ion exchanger is configured to remove ions contained in a coolant by passing the coolant through a case containing an ion exchange resin (see, for example, Patent Document 1).

JP 2011-83744 A

  However, as in the case of the ion exchanger described in Patent Document 1, for example, when the internal flow path (ion exchange resin storage chamber) in the case that stores the ion exchange resin is bent in a U-shape as a whole, Depending on the shape of the flow path itself and the connection form with the introduction flow path for guiding the cooling liquid to the flow path, the flow velocity and pressure of the cooling liquid vary depending on the position, and the cooling liquid does not flow uniformly in the internal flow path. There is a risk.

  For example, on the outer peripheral side of the corner portion of the internal flow path bent in a U-shape, the flow rate of the cooling liquid is high, and the flow rate passing therethrough increases. On the other hand, on the inner peripheral side of the corner, the flow rate of the cooling liquid is slow, and the flow rate passing therethrough is also small. Further, when a corner or the like exists in the internal flow path, there is a possibility that the cooling liquid hardly flows through the corner or the like.

  As a result, there is a possibility that the ion exchange efficiency and the deterioration of the ion exchange resin will progress, and further, the pressure loss in the cooling system, the circulation flow rate of the cooling liquid, and the like will be greatly affected.

  The present invention has been made in view of the above circumstances, and has as one of its main objects to provide an ion exchanger capable of achieving a uniform flow of a coolant in a cooling system of a fuel cell system. I have.

  Hereinafter, each means suitable for solving the above-described problem will be described in terms of items. In addition, the function and effect peculiar to the corresponding means will be added if necessary.

Means 1. In a cooling system of a fuel cell system, an ion exchanger for removing ions contained in a cooling liquid by adsorbing the ions on an ion exchange resin,
A main body cylinder having a substantially linear internal flow path through which the coolant flows,
An ion exchange resin storage chamber provided in a predetermined section in the axial direction of the internal flow path and containing the ion exchange resin,
A coolant inflow chamber provided upstream of the ion exchange resin accommodating chamber in the internal flow path, and into which a coolant introduced from outside the main body cylindrical portion flows;
A partition provided in the internal flow path between the ion exchange resin accommodating chamber and the coolant inflow chamber, the partition having a plurality of holes allowing passage of the coolant. Exchanger.

  Here, the “substantially linear internal flow path” does not include an internal flow path that is largely bent in a U-shape or an L-shape, and is not limited to a completely linear internal flow path. And an internal flow path that is gently curved to allow the coolant to flow smoothly and substantially uniformly.

  However, the “substantially straight internal flow path” includes not only an internal flow path whose flow path cross-sectional shape orthogonal to the axial direction is the same in all sections in the axial direction, but also, for example, an axial upstream section and a downstream section. In the above, an internal flow path having a different flow path cross-sectional shape and a different flow path cross-sectional area is also included.

  Of course, the cross-sectional shape of the internal flow path is not limited to a circular shape, but may be another shape such as an elliptical shape or a polygonal shape.

  According to the ion exchanger according to the means 1, the cooling liquid guided from the outside to the internal flow path once flows into the cooling liquid inflow chamber, is rectified through the partition wall functioning as rectifying means, and then rectified. It flows straight into the ion-exchange resin accommodating chamber along the axial direction of the flow path, passes straight through the ion-exchange resin accommodating chamber, and flows out as it is.

  Accordingly, the flow rate of the cooling liquid flowing into and passing through the ion exchange resin accommodating chamber can be reduced, the flow can be made uniform, and each ion exchange resin can perform ion exchange uniformly.

  As a result, it is possible to reduce the effects on the ion exchange efficiency, the progress of the deterioration of the ion exchange resin, and the pressure loss in the cooling system, the circulation flow rate of the coolant, and the like.

  Means 2. 2. The ion exchanger according to claim 1, further comprising a flow rate relaxation chamber that does not store the ion exchange resin between the ion exchange resin storage chamber and the partition wall in the internal flow path. 3.

  Depending on the configuration of the partition (hole), the flow of the coolant may be disturbed immediately downstream of the partition when the coolant passes through the partition. In other words, if the ion exchange resin is stored up to the position of the partition (the ion exchange resin storage chamber is formed up to the position of the partition), the flow of the coolant flowing into the ion exchange resin storage chamber May become unstable.

  On the other hand, according to the means 2, the flow velocity moderating chamber (a non-accommodating space not accommodating the ion exchange resin) is formed, so that the flow velocity of the coolant can be further moderated and the ion exchange resin accommodating chamber can be accommodated. The flow of the coolant flowing into the chamber can be made more stable and uniform. As a result, the operation and effect of the above-described means 1 can be further enhanced.

Means 3. Equipped with a reserve tank that can store coolant,
The ion exchanger according to claim 1 or 2, wherein the reserve tank and the coolant inflow chamber are communicated with each other.

  According to the means 3, the ion exchanger and the reserve tank are integrated, and communication between the coolant inflow chamber and the reserve tank is achieved, so that the capacity of the coolant inflow chamber can be substantially increased. As a result, the flow rate of the cooling liquid flowing into the cooling liquid inflow chamber can be stabilized, and the operational effects of the above-described means 1 and the like can be further enhanced.

Means 4. A gas-liquid separator capable of separating gas contained in the cooling liquid,
A first communication path for guiding the gas after gas-liquid separation to the reserve tank;
4. The ion exchanger according to claim 3, further comprising a second communication passage for guiding the coolant after the gas-liquid separation to the main body cylinder.

  Conventionally, when a cooling liquid mixed with a gas (bubbles) passes through an ion exchanger, the gas is not pushed away and may stay in the ion exchanger. In particular, when the ion exchange resin (ion exchange resin storage chamber) exists in the flow path section in which the coolant flows in the direction opposite to the buoyancy of the gas from the top to the bottom, the buoyancy of the gas exceeds the flow of the coolant and the cooling is performed. It may be difficult to discharge the gas along with the flow of the liquid. As a result, various inconveniences such as deterioration of the function of the ion exchange resin and deterioration of the coolant may occur.

  More specifically, for example, the flow of the coolant may be interrupted by the pressure of the gas, and the coolant may not flow to a part of the ion exchange resin. This may cause problems such as a decrease in ion exchange efficiency, an increase in ion concentration in the coolant, and an uneven degree of deterioration of the ion exchange resin.

  In addition, the cooling fluid does not flow properly due to the intervening gas, and the operation of the cooling system pump becomes unstable, and steam is generated in the ion exchanger, and the deterioration of parts made of resin material etc. There is a possibility that a problem such as an earlier operation may occur.

  On the other hand, according to the means 4, the ion exchanger and the gas-liquid separator are integrated, and the gas after the gas-liquid separation is guided to the reserve tank, and the coolant after the gas-liquid separation is guided to the main body cylinder. With this configuration, it is possible to suppress the occurrence of such a problem.

  Means 5. The ion exchanger according to any one of means 1 to 4, wherein the hole of the partition wall is formed so as to increase in diameter toward a downstream side of the internal flow path.

  According to the means 5, the flow rate of the cooling liquid passing through the hole can be reduced. As a result, the operational effects of the above-described means 1 and the like can be further enhanced.

  Means 6. The ion exchanger according to any one of means 1 to 5, further comprising a uniforming unit for equalizing a flow of the cooling liquid passing through the partition.

  The flow velocity of the cooling liquid passing through the partition (hole) along the axial direction of the internal flow path is high near the center of the flow path and near the peripheral edge of the flow path connected to the inner peripheral surface of the main body cylinder. For example, it becomes slow depending on the position of the hole formed in the partition. As a result, the flow of the cooling liquid passing through the partition may be disturbed.

  On the other hand, according to the means 6, the provision of the equalizing means can further stabilize the flow of the cooling liquid passing through the partition, and furthermore, the flow of the cooling liquid flowing into the ion exchange resin storage chamber. . As a result, the operational effects of the above-described means 1 and the like can be further enhanced.

  As an example of embodying the uniformizing means, for example, the downstream side wall surface of the partition wall portion so that the thickness of the partition wall portion in the axial direction of the internal flow channel becomes thinner near the flow channel peripheral portion than near the flow channel center portion. In one example, the curved portion is formed such that the length of the hole formed near the periphery of the flow path is shorter than the length of the hole formed near the center of the flow path of the partition. No.

  In addition, for example, a configuration in which the opening area of the hole formed near the periphery of the flow path is larger than the opening area of the hole formed near the center of the flow path of the partition wall is also given as an example. Can be

  With this configuration, the resistance at the time of passage of the coolant near the peripheral edge of the partition wall is reduced, and the flow rate of the coolant is less likely to be reduced.

FIG. 2 is a schematic configuration diagram illustrating a cooling system of the fuel cell system. It is the fragmentary sectional view which cut the ion exchanger module concerning a 1st embodiment along the up-and-down direction. (A), (b), (c) is a partial cross-sectional view of the ion exchanger module cut along the horizontal direction at the positions of the lines AA, BB, and CC in FIG. 2, respectively. is there. It is the fragmentary sectional view which cut the ion exchanger module concerning a 2nd embodiment along the up-and-down direction. (A), (b), and (c) are partial cross-sectional views of the ion exchanger module cut along the horizontal direction at the positions of lines AA, BB, and CC in FIG. 4, respectively. is there. It is a partial expanded sectional view of an inner cylinder part showing a partition part concerning another embodiment. It is a partial expanded sectional view of an inner cylinder part showing a partition part concerning another embodiment. It is a partial expanded sectional view of an inner cylinder part showing a partition part concerning another embodiment.

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The ion exchanger module according to the present invention is used, for example, in a cooling system of a fuel cell system in a fuel cell vehicle. FIG. 1 is a schematic configuration diagram showing a cooling system 50 of a fuel cell system to which an ion exchanger module 1 described below is attached.

  As shown in the figure, in the cooling system 50, a flow path for circulating a cooling liquid mainly includes an upstream pipe 53 connecting an inlet 51 a of the fuel cell 51 and an outlet 52 b of the radiator 52, A downstream pipe 54 connects the outlet 51b of the radiator 52 and the inlet 52a of the radiator 52, and a bypass pipe 55 connected to the upstream pipe 53 and the downstream pipe 54 in parallel with the radiator 52.

  The ion exchanger module 1 is installed in the bypass pipe 55, and a three-way valve (three-way solenoid valve) 60 is installed in a connection portion between the bypass pipe 55 and the upstream pipe 53. Further, a pump 61 for circulating a coolant is provided in the upstream pipe 53 between the three-way valve 60 and the fuel cell 51. Various controls relating to the cooling system 50, such as switching control of the three-way valve 60 and drive control of the pump 61, are performed by a control unit (not shown).

  Here, the configuration of the fuel cell 51 will be described first. A general fuel cell (polymer electrolyte fuel cell) has a fuel cell stack in which a plurality of power generation cells are stacked. In the power generation cell, a membrane electrode assembly (MEA) in which an anode (fuel electrode) and a cathode (air electrode) each including a catalyst layer and a gas diffusion layer are disposed on both sides of an electrolyte membrane is sandwiched between a pair of separators. Become.

  A fuel gas (for example, hydrogen gas) is supplied to the anode of each power generation cell, and an oxidizing gas (for example, air) is supplied to the cathode. When the fuel gas is supplied to the anode, the hydrogen contained in the fuel gas reacts with the catalyst of the catalyst layer constituting the anode, thereby generating hydrogen ions. The generated hydrogen ions pass through the electrolyte membrane and cause a chemical reaction with oxygen at the cathode. Electric power is generated by this chemical reaction.

  Each power generation cell generates heat with power generation. In the fuel cell 51 (fuel cell stack), a flow path (not shown) for flowing a coolant through each power generation cell is formed, and the power generation cell is formed by the coolant flowing into the inside from the inflow port 51a. Cooled. Then, the coolant after the heat exchange is discharged from the outlet 51b.

  In this embodiment, LLC (long life coolant) in which water contains ethylene glycol (antifreeze) is used as the cooling liquid. Therefore, when the power generation cell of the fuel cell 51 is cooled by the cooling liquid, ethylene glycol contained in the cooling liquid is thermally decomposed to generate an acid (for example, formic acid or the like), and the acid generates negative ions. Generated. Further, when the inner surface of the cooling liquid circulation flow path (the pipes 53, 54, 55, etc.) is corroded by the acid, positive ions are also generated. In this way, the coolant contains impurity ions in which negative ions and positive ions are mixed. Since these ions have electric charges, the conductivity of the coolant increases as the concentration of the impurity ions contained in the coolant increases. As a result, there is a possibility that electric leakage from the fuel cell 51 to the outside through the cooling liquid.

  On the other hand, the radiator 52 is for blowing air by a blowing fan (not shown) to cool the coolant heated by the fuel cell 51. The coolant radiates heat when passing through the radiator 52 and is cooled. In the present embodiment, the flow of the coolant is controlled so that the temperature of the fuel cell 51 becomes an optimum temperature (for example, 65 ° C.).

  The three-way valve 60 is for switching the flow path through which the coolant flows. More specifically, when the temperature of the fuel cell 51 is lower than the optimum temperature, the first inlet (the radiator 52 side) of the three-way valve 60 is closed, and the second inlet (the bypass pipe 55 side) and the outlet (the pump 61). Side) is opened. Thus, the coolant circulates between the fuel cell 51 and the bypass pipe 55 by driving the pump 61. On the other hand, when the temperature of the fuel cell 51 exceeds the optimum temperature, the first inlet and the outlet of the three-way valve 60 are opened, and the second inlet is closed. Thus, the coolant circulates between the fuel cell 51 and the radiator 52 by driving the pump 61, thereby cooling the fuel cell 51.

  Therefore, when the temperature of the fuel cell 51 is lower than the optimum temperature, all the coolant in the cooling system 50 always circulates through the bypass pipe 55. At this time, as the coolant passes through the ion exchanger module 1, impurity ions contained in the coolant are partially removed. This suppresses an increase in the conductivity of the coolant.

  Hereinafter, the configuration of the ion exchanger module 1 will be described in detail with reference to FIGS. FIG. 2 is a partial cross-sectional view of the ion exchanger module 1 in a state in which the coolant flows, which is cut along the vertical direction. The dotted line in FIG. 2 indicates the liquid level H of the cooling liquid. FIGS. 3A, 3B, and 3C show portions obtained by cutting the ion exchanger module 1 along the horizontal direction at the positions of the lines AA, BB, and CC in FIG. 2, respectively. It is sectional drawing.

  The ion exchanger module 1 according to the present embodiment has an ion exchanger 2, a gas-liquid separator 3, and a reserve tank 4 integrally formed. That is, the ion exchanger module 1 can be called an ion exchanger in which the gas-liquid separator 3 and the reserve tank 4 are integrally formed with the ion exchanger main body 2.

  The outer case portion of the ion exchanger module 1 is mainly constituted by assembling the upper case body 1A and the lower case body 1B.

  Specifically, a lower portion of the outer case portion of the ion exchanger 2 and an outer case portion of the gas-liquid separator 3 are integrally formed by a lower case body 1B, and both are formed by a lower communication pipe portion provided in the lower case body 1B. The coolant is communicatively communicated through a lower communication passage 5 a in the inside 5.

  The upper part of the outer case part of the ion exchanger 2 and the reserve tank 4 are integrally formed by the upper case body 1A, and both are formed by the upper communication passage 6a in the upper communication pipe part 6 provided in the upper case body 1A. The coolant is communicablely communicated via the.

  Hereinafter, the ion exchanger 2, the gas-liquid separator 3, and the reserve tank 4 will be individually described.

  First, the configuration of the ion exchanger 2 will be described in detail. The ion exchanger 2 is removably assembled inside the outer cylinder part 11 and an outer cylinder part 11 serving as its own outer case part, which is configured by vertically assembling the two case bodies 1A and 1B. And an inner cylindrical portion 12.

  The inner cylinder portion 12 of the present embodiment is handled as one cartridge containing an ion exchange resin 18 described later therein, and is configured to be replaceable with respect to the outer cylinder portion 11.

  The outer cylinder part 11 has a cylindrical shape with a bottom and an open upper surface as a whole, and is disposed so that a center axis C1 thereof extends substantially vertically when the ion exchanger module 1 is attached to the cooling system 50. You.

  The outer cylindrical portion 11 includes a small-diameter cylindrical portion 11a located at a lower portion thereof, and a large-diameter cylindrical portion 11b located at an upper portion of the small-diameter cylindrical portion 11a and having an inner diameter set to be larger than the inner diameter of the small-diameter cylindrical portion 11a. Have.

  The small-diameter cylindrical portion 11a of the outer cylindrical portion 11 is provided with an outflow-side joint portion 11c on the side surface near the lower end portion for communicating the inside with the outside. The outflow-side joint portion 11c has a cylindrical shape, and is connected to the downstream-side bypass pipe 55b in a state where the center axis C2 is disposed substantially in the horizontal direction.

  The large-diameter cylindrical portion 11b of the outer cylindrical portion 11 communicates with the gas-liquid separator 3 via the lower communication pipe 5 (lower communication passage 5a) on a side surface near the lower end.

  A lid 13 is detachably attached to the upper opening of the outer cylinder 11. In the present embodiment, a female screw (not shown) formed on the inner peripheral surface of the lid 13 is screwed to a male screw (not shown) formed on the outer peripheral surface of the upper end portion of the outer cylinder 11. Thereby, the lid 13 is fixed to the outer cylinder 11. By removing the lid 13, the inner cylinder 12 (cartridge) can be replaced, the coolant can be replenished, and the like.

  On the other hand, the inner cylindrical portion 12 is formed in a hollow cylindrical shape having an open lower surface, and is assembled in the outer cylindrical portion 11 such that its central axis C3 overlaps with the central axis C1 of the outer cylindrical portion 11.

  The inner cylinder portion 12 corresponds to the main body cylinder portion in the present embodiment, and has an internal space in which an internal flow path having a circular cross section extending linearly along the direction of the central axis C3 is formed. In particular, in the present embodiment, the inner diameter of the internal flow path is the same in the entire flow path in the direction of the central axis C3 (all of the ion exchange resin accommodating chamber 16, the cooling liquid inflow chamber 19, and the flow velocity relaxation chamber 20 described later). It is configured. That is, the cross-sectional shape and the cross-sectional area of the internal flow path orthogonal to the central axis C3 are the same in the entire flow path in the direction of the central axis C3.

  The inner cylindrical portion 12 has an outer peripheral surface of a peripheral wall portion 12 b set to have substantially the same diameter as an inner peripheral surface of the small-diameter cylindrical portion 11 a of the outer cylindrical portion 11. Thereby, in a state where the inner cylindrical portion 12 is assembled in the outer cylindrical portion 11, between the outer peripheral surface of the peripheral wall portion 12b of the inner cylindrical portion 12 and the inner peripheral surface of the small diameter cylindrical portion 11a of the outer cylindrical portion 11. It is configured such that no gap occurs.

  The inner cylinder portion 12 is assembled to the outer cylinder portion 11 in such a manner that displacement in the vertical and circumferential directions is restricted by engaging means (not shown). For example, a concave portion or a convex portion provided on the inner peripheral surface of the outer cylindrical portion 11 is associated with an engaging convex portion or an engaging concave portion provided on the outer peripheral surface of the peripheral wall portion 12b of the inner cylindrical portion 12. An example of the engagement means is a configuration for combining. Of course, the configuration of the engagement means is not limited to this, and another configuration may be adopted.

  With this configuration, in the present embodiment, in a state where the inner cylinder 12 is assembled in the outer cylinder 11, between the lower end of the inner cylinder 12 and the bottom wall 11d of the outer cylinder 11, and Spaces through which the coolant can flow are formed between the top wall portion 12a of the inner cylinder portion 12 and the lid portion 13, respectively.

  The inner cylindrical portion 12 is formed with a partition portion 15 which vertically partitions the internal space at a predetermined position in the center axis C3. In the present embodiment, in a state in which the inner cylindrical portion 12 is assembled in the outer cylindrical portion 11, a position below the height position of the boundary between the small-diameter cylindrical portion 11a and the large-diameter cylindrical portion 11b of the outer cylindrical portion 11, In other words, the partition wall 15 of the inner cylindrical portion 12 is provided below the height position of the lower communication pipe portion 5 (the lower communication passage 5a).

  The partition part 15 has a substantially flat plate shape formed along a plane orthogonal to the central axis C <b> 3, and is formed integrally with the peripheral wall part 12 b of the inner cylindrical part 12. The partition part 15 is for reducing the flow velocity of the coolant and for rectifying and equalizing the flow of the coolant, and has a large number of through-holes 15a for passing the coolant along the direction of the central axis C3. ing. The through hole 15a corresponds to a hole in the present embodiment.

  In the internal space of the inner cylindrical portion 12, an ion exchange resin accommodating chamber 16 is formed in a downstream area located below the partition portion 15. In the present embodiment, mesh meshes 17 are attached as partition walls on the upstream side and the downstream side that partition the ion exchange resin storage chamber 16. The mesh 17 allows passage of the cooling liquid, while preventing passage of an ion exchange resin 18 described later.

  In the ion exchange resin storage chamber 16, a granular ion exchange resin 18 capable of removing impurity ions contained in the cooling liquid by ion exchange is stored. The ion exchange resin 18 is a publicly known one. In the present embodiment, an anion exchange resin that adsorbs negative ions and a cation exchange resin that adsorbs positive ions are housed in a mixed manner.

  In the downstream area of the inner space of the inner cylindrical portion 12, a section from the partition wall 15 to the ion exchange resin accommodating chamber 16 (the upstream mesh 17) in the direction of the central axis C3 does not accommodate the ion exchange resin 18. It is a non-containment space. Such a non-accommodating space functions as a flow velocity relaxation chamber 20 for further reducing the flow velocity of the cooling liquid passing through the partition 15 and further stabilizing the flow of the cooling liquid.

  On the other hand, in the internal space of the inner cylindrical portion 12, the upstream area located above the partition portion 15, that is, the section from the top wall portion 12a to the partition portion 15 in the direction of the central axis C3 is the communication pipe portion 5, It functions as a coolant inflow chamber 19 into which coolant introduced from the gas-liquid separator 3 and the reserve tank 4 via the communication passages 6 (communication passages 5a, 6a) respectively.

  Further, in the present embodiment, in a state where the inner cylinder portion 12 is attached to the outer cylinder portion 11, the outer peripheral surface of the peripheral wall portion 12 b of the inner cylinder portion 12 corresponding to the section where the coolant inflow chamber 19 is formed, and The outer peripheral flow passage 21 is formed between the inner peripheral surface of the large-diameter cylindrical portion 11b of the portion 11 (see FIG. 3).

  However, the outer peripheral flow path 21a of the present embodiment is divided into an upper outer peripheral flow path 21a and a lower outer flow path 21e by a partition wall 11e protrudingly formed on the inner peripheral surface of the outer cylindrical portion 11 (large-diameter cylindrical portion 11b). And a road 21b (see FIG. 2).

  Correspondingly, an inlet 24 is formed in the peripheral wall portion 12b of the inner cylindrical portion 12 at a position opposite to the position facing the lower communication passage 5a with respect to the center axis C3. The inflow port 24 is for allowing the cooling liquid guided from the gas-liquid separator 3 to the lower outer peripheral flow path 21 b through the lower communication path 5 a to flow into the cooling liquid inflow chamber 19.

  An inlet 25a is formed in the peripheral wall portion 12b of the inner cylindrical portion 12 at a position opposed to the upper communication pipe portion 6, and at a position opposite to the inlet 25a with respect to the center axis C3. The inflow port 25b is formed with an opening. The inflow ports 25a and 25b are for letting the coolant guided from the reserve tank 4 to the upper outer peripheral channel 21a through the upper communication passage 6a flow into the coolant inflow chamber 19.

  Next, the configuration of the gas-liquid separator 3 will be described in detail. The gas-liquid separator 3 according to the present embodiment is a cyclone-type gas-liquid separator that swirls a coolant and separates the coolant into a gas and a liquid by centrifugal force.

  The gas-liquid separator 3 includes an outer cylindrical portion 31 which is the outer case portion of the lower case body 1B and is an inner cylindrical portion 32 assembled inside the outer cylindrical portion 31. .

  The outer cylinder portion 31 has a bottomed cylindrical shape with an upper surface opened as a whole, and is disposed so that a center axis C4 thereof extends substantially vertically when the ion exchanger module 1 is attached to the cooling system 50. You. That is, the outer cylinder portion 31 of the gas-liquid separator 3 is provided such that the central axis C4 is parallel to the central axis C1 of the outer cylinder portion 11 of the ion exchanger 2.

  The outer cylinder portion 31 is provided with an inflow-side joint portion 31a that communicates the inside with the outside on a side surface near the lower end portion. The inflow-side joint portion 31a has a cylindrical shape, and is connected to the upstream-side bypass pipe 55a in a state where the center axis C5 is disposed substantially in the horizontal direction. However, the center axis C4 of the outer cylindrical portion 31 and the center axis C5 of the inflow-side joint portion 31a are set so as not to intersect with each other, so that the coolant flowing from the inflow-side joint portion 31a flows inside the gas-liquid separator 3. It is configured to generate a swirling flow.

  The outer cylindrical portion 31 communicates with the outer cylindrical portion 11 (large-diameter cylindrical portion 11b) of the ion exchanger 2 via the lower communication pipe portion 5 (lower communication passage 5a) on a side surface near the upper end. . More specifically, the ion exchanger 2 communicates with an outer peripheral channel 21 (a lower outer peripheral channel 21b) formed between the outer cylindrical portion 11 (large-diameter cylindrical portion 11b) and the inner cylindrical portion 12 of the ion exchanger 2. It is configured. In the lower communication tube 5 according to the present embodiment, the opening area of the opening (outlet) 5b on the ion exchanger 2 side is larger than the opening area of the opening (inlet) 5c on the gas-liquid separator 3 side. Are also large.

  The inner cylindrical portion 32 has a substantially tapered cylindrical shape having a smaller diameter as it goes upward, and is assembled in the outer cylindrical portion 31 so that a central axis C6 of the inner cylindrical portion 32 overlaps a central axis C4 of the outer cylindrical portion 31.

  The inner cylinder portion 32 has its entire lower end portion entirely engaged with a stepped portion 31b formed on the inner peripheral surface of the outer cylinder portion 31 without any gap. It is configured to be guided into the inner cylindrical portion 32.

  At an upper end portion of the inner cylinder portion 32, a lid portion 33 for closing the upper opening portion of the inner cylinder portion 32 and the upper opening portion of the outer cylinder portion 31 is integrally formed. At the center of the lid part 33, a through-tube part 34 penetrating vertically along the central axis C6 is formed.

  A plurality of outlets 35 are formed in the side surface near the upper end of the inner cylindrical portion 32 at predetermined intervals in the circumferential direction. In the present embodiment, four outlets 35 are formed at equal intervals. One of the outlets 35 is provided at a position facing the opening 5c of the lower communication pipe 5 (the lower communication passage 5a). The lower communication pipe portion 5 (the lower communication passage 5a) forms a second communication passage in the present embodiment.

  In a state in which the inner cylindrical portion 32 is attached to the outer cylindrical portion 31, an outer circumferential flow path 36 through which the coolant can flow is provided between the outer circumferential surface of the inner cylindrical portion 32 and the inner circumferential surface of the outer cylindrical portion 31. Are formed.

  Next, the configuration of the reserve tank 4 will be described in detail. The reserve tank 4 stores a part of the coolant circulating in the cooling system 50 therein, has a gas reservoir in a space above the liquid reservoir, and has a gas separated from the coolant by the gas-liquid separator 3. And has a function of absorbing a change in the volume of the coolant due to a change in temperature.

  The reserve tank 4 is assembled with the gas-liquid separator 3 so that the upper main body 1A has a tank main body 4a formed in a heavenly cylindrical shape with an open lower surface and covers the upper opening of the outer cylindrical portion 31. Be attached.

  The bottom wall of the reserve tank 4 is constituted by the lid 33 of the gas-liquid separator 3, and a storage chamber capable of storing a coolant or gas is formed therein. Accordingly, the storage chamber of the reserve tank 4 is in communication with the inner cylinder 32 of the gas-liquid separator 3 via the through cylinder 34. The through-tube portion 34 constitutes a first communication passage in the present embodiment.

  The reserve tank 4 communicates with the outer cylinder 11 (large-diameter cylinder 11b) of the ion exchanger 2 via the upper communication pipe 6 (upper communication passage 6a) on the side surface of the tank body 4a. Thereby, the large-diameter cylindrical portion 11b of the ion exchanger 2 can perform the same function as the reserve tank 4.

  Next, the operation of the ion exchanger module 1 of the present embodiment configured as described above will be described.

  The cooling liquid flowing into the gas-liquid separator 3 from the upstream bypass pipe 55a via the inflow-side joint portion 31a flows along the inner wall surface of the inner cylindrical portion 32 and rises while generating a swirling flow.

  Here, when the coolant containing bubbles (gas) flows in, the centrifugal force generated by the swirling flow causes the coolant having a high density to collect on the inner wall surface side of the inner cylinder portion 32, and the bubbles having a low density to flow. Bubbles in the coolant and the coolant are separated such that they gather at the center of the inner cylinder portion 32 (the center of the vortex of the swirling flow).

  Then, the bubbles that rise while being collected at the center of the inner cylindrical portion 32 are guided to the storage chamber in the reserve tank 4 via the through cylindrical portion 34 together with a part of the cooling liquid including the bubbles.

  On the other hand, the remaining coolant from which air bubbles have been substantially removed flows out of the outlet 35 into the outer peripheral flow path 36, and flows through the lower communication pipe portion 5 (the lower communication passage 5a) to the lower side of the ion exchanger 2. It flows into the outer peripheral channel 21b.

  As described above, in the lower communication pipe portion 5 according to the present embodiment, the opening area (outflow port) 5b on the ion exchanger 2 side is equal to the opening area (inflow port) 5c on the gas-liquid separator 3 side. Since it is formed larger than the area, the flow rate of the coolant flowing into the outer peripheral channel 21b on the lower side of the ion exchanger 2 is reduced.

  The coolant flowing into the outer peripheral flow path 21b on the lower side of the ion exchanger 2 collides with the peripheral wall part 12b of the inner cylindrical part 12, and branches off in two directions along the outer peripheral flow path 21b while being opposite to the inner cylindrical part 12. And flows into the coolant inflow chamber 19 from the inflow port 24 located on the opposite side of the inner cylindrical portion 12.

  Note that the cooling liquid guided into the reserve tank 4 flows into the large-diameter cylindrical portion 11b of the outer cylindrical portion 11 via the upper communication pipe portion 6. Among these, a part of the coolant flowing into the outer peripheral flow path 21a on the upper side of the ion exchanger 2 flows into the coolant inflow chamber 19 from the inlet 25a, and the rest flows or flows along the outer peripheral flow path 21a. The coolant flows through the space above the top wall portion 12a and flows into the coolant inflow chamber 19 via the inflow port 25b located on the opposite side of the inner cylinder portion 12.

  The coolant that has flowed into the coolant inflow chamber 19 flows into the lower flow velocity mitigation chamber 20 through many through holes 15 a of the partition wall 15. Thus, the flow rate of the coolant is reduced, and the flow of the coolant is rectified.

  The cooling liquid that has flowed into the flow velocity relaxation chamber 20 passes straight downward through the flow velocity relaxation chamber 20 along the direction of the central axis C <b> 3, and flows into the ion exchange resin storage chamber 16.

  The coolant flowing into the ion-exchange resin storage chamber 16 passes through the gap between the ion-exchange resins 18 and, as a whole, straightens the ion-exchange resin storage chamber 16 along the direction of the central axis C3 without changing the flow direction. It flows down and passes. During this passage, the impurity ions contained in the cooling liquid are partially removed by the ion exchange resin 18.

  Then, the coolant that has flowed out of the ion-exchange resin storage chamber 16 is discharged to the downstream bypass pipe 55b via the outflow-side joint portion 11c.

  As described in detail above, according to the ion exchanger module 1 according to the present embodiment, the ion exchanger 2 and the gas-liquid separator 3 are integrated, and the coolant after the gas-liquid separation is guided to the ion exchanger 2. With this configuration, it is possible to suppress various problems that may occur when bubbles are mixed in the cooling liquid.

  At this time, the cooling liquid guided from the gas-liquid separator 3 to the ion exchanger 2 passes through the lower outer peripheral flow path 21b provided around the inner cylinder 12 and stabilizes its flow, The coolant flows into the coolant inflow chamber 19.

  Then, the coolant flowing into the coolant inflow chamber 19 is straightened through the partition wall portion 15 and then flows straight into the ion exchange resin accommodating chamber 16 along the direction of the central axis C3, where it is stored as it is. It passes straight through the inside of the chamber 16 and flows out.

  Thus, the flow rate of the cooling liquid flowing into and passing through the ion exchange resin accommodating chamber 16 can be reduced, the flow can be made uniform, and the ion exchange resins 18 can perform ion exchange uniformly.

  As a result, it is possible to reduce the effects on the ion exchange efficiency, the progress of the deterioration of the ion exchange resin, and the pressure loss in the cooling system, the circulation flow rate of the coolant, and the like.

  Further, in the present embodiment, in the section from the partition 15 in the direction of the central axis C3 to the ion-exchange resin accommodating chamber 16 (the mesh 17 on the upstream side) in the internal flow path of the inner cylindrical portion 12, the ion-exchange resin 18 is formed. It has a flow rate relaxation chamber 20 that is not accommodated. Thus, the flow rate of the cooling liquid can be further reduced, and the flow of the cooling liquid flowing into the ion exchange resin storage chamber 16 can be further stabilized and made uniform.

  Further, in the present embodiment, the ion exchanger 2 and the reserve tank 4 are integrated, and the communication between the coolant inflow chamber 19 of the inner cylindrical portion 12 and the reserve tank 4 is achieved. Large capacity can be achieved. As a result, the flow rate of the coolant flowing into the coolant inflow chamber 19 can be stabilized.

[Second embodiment]
Next, a second embodiment will be described in detail with reference to FIGS. However, the same parts as those in the first embodiment described above are denoted by the same member names and the same reference numerals, and the detailed description thereof will be omitted. In the following, parts different from the first embodiment will be mainly described. It will be described as.

  FIG. 4 is a partial cross-sectional view of the ion exchanger module 1 according to the second embodiment in a state in which the coolant is flowing, which is cut along a vertical direction. The dotted line in FIG. 4 indicates the liquid level H of the cooling liquid. FIGS. 5A, 5B, and 5C show portions of the ion exchanger module 1 cut along the horizontal direction at the positions of the lines AA, BB, and CC in FIG. 4, respectively. It is sectional drawing.

  In the present embodiment, in a state where the inner cylindrical portion 12 is assembled to the outer cylindrical portion 11, the outer peripheral surface of the peripheral wall portion 12 b of the inner cylindrical portion 12 corresponding to the section where the coolant inflow chamber 19 is formed, and the outer cylindrical portion 11. The outer peripheral flow path 21 is formed between the inner peripheral surface of the large-diameter cylindrical portion 11b (see FIGS. 4 and 5). However, the outer peripheral flow path 21 of the present embodiment is not partitioned vertically as in the first embodiment.

  The inflow port 24 and the inflow ports 25a and 25b are not formed in the peripheral wall portion 12b of the inner cylinder portion 12, and the inflow port 41 is formed in the center portion of the top wall portion 12a of the inner cylinder portion 12. ing.

  The top wall portion 12a is formed with a bottomed cylindrical inflow cylinder portion 42 that protrudes downward along the central axis C3, corresponding to the inflow port 41. A plurality of outlets 43 are formed in the peripheral wall of the inflow cylinder 42 at predetermined intervals in the circumferential direction. In the present embodiment, four outlets 43 are formed at equal intervals.

  Next, the operation of the ion exchanger module 1 of the present embodiment configured as described above will be described.

  As in the first embodiment, the coolant flowing from the gas-liquid separator 3 into the outer peripheral flow path 21 of the ion exchanger 2 via the lower communication pipe 5 (lower communication passage 5 a) is It collides with the portion 12b, branches in two horizontal directions and upwards along the outer peripheral flow path 21, flows upward while wrapping around to the opposite side of the inner cylindrical portion 12, and flows toward the center of the top wall portion 12a of the inner cylindrical portion 12. The fluid flows into the inflow cylinder portion 42 from the inflow port 41 located in the portion.

  Note that the cooling liquid guided into the reserve tank 4 flows into the large-diameter cylindrical portion 11b of the outer cylindrical portion 11 via the upper communication pipe portion 6. Then, like the coolant directly flowing from the gas-liquid separator 3, the coolant flows into the inflow cylinder 42 from the inflow port 41 located at the center of the top wall 12 a of the inner cylinder 12.

  The coolant flowing into the inflow cylinder portion 42 from the inflow port 41 flows from the outflow port 43 formed in the peripheral wall of the inflow cylinder portion 42 along the radial direction of the internal flow path orthogonal to the central axis C3. It flows into the main chamber of the inflow chamber 19.

  The coolant that has flowed into the main chamber of the coolant inflow chamber 19 flows into the lower flow rate mitigation chamber 20 through many through holes 15 a of the partition wall 15.

  The cooling liquid that has flowed into the flow velocity relaxation chamber 20 passes straight downward through the flow velocity relaxation chamber 20 along the direction of the central axis C <b> 3, and flows into the ion exchange resin storage chamber 16.

  The coolant that has flowed into the ion-exchange resin storage chamber 16 flows straight down the ion-exchange resin storage chamber 16 along the direction of the central axis C3 and passes therethrough. During this passage, the impurity ions contained in the cooling liquid are partially removed by the ion exchange resin 18.

  Then, the coolant that has flowed out of the ion-exchange resin storage chamber 16 is discharged to the downstream bypass pipe 55b via the outflow-side joint portion 11c.

  As described in detail above, according to the present embodiment, the same operation and effect as those of the first embodiment can be obtained.

  In particular, in the present embodiment, the coolant flowing from the gas-liquid separator 3 into the outer peripheral flow path 21 of the ion exchanger 2 is guided to the top wall 12a of the inner cylinder 12 through the outer peripheral flow path 21 and It is configured to flow from the inflow port 41 formed in the top wall portion 12a into the coolant inflow chamber 19 in the inner cylinder portion 12.

  As a result, the coolant flows straight through the relatively long section of the internal flow path in the inner cylinder portion 12 along the direction of the central axis C3, so that the flow rate of the coolant is further reduced and the flow of the coolant is reduced. Can be made more stable and uniform.

  It should be noted that the present invention is not limited to the content described in the above embodiment, and may be implemented as follows, for example. Of course, other application examples and modifications not illustrated below are naturally possible.

  (A) In each of the above embodiments, the present invention is embodied as the ion exchanger module 1 used in the cooling system of the fuel cell system in the fuel cell vehicle. However, the present invention is not limited to this. It may be embodied as an ion exchanger module used in a cooling system of a fuel cell system.

  (B) The configuration of the cooling system 50 such as the mounting position of the ion exchanger module 1 is not limited to the above embodiments. For example, a configuration in which the ion exchanger module 1 is attached to a cooling system capable of controlling the flow rate of the coolant to the radiator 52 and the bypass pipe 55 may be employed. Further, a second bypass pipe branched from the bypass pipe 55 may be provided, and the ion exchanger module 1 may be attached to the second bypass pipe.

  (C) The configuration of the ion exchanger is not limited to the ion exchanger 2 according to each of the above embodiments, and another configuration may be adopted.

  For example, the outer tube portion 11 and the inner tube portion 12 may have different shapes, such as an elliptical tube shape and a square tube shape, instead of the cylindrical shape.

  Further, in the ion exchanger 2 according to each of the above embodiments, the inner cylindrical portion 12 is detachably attached to the outer cylindrical portion 11, and when the ion exchange resin 18 is replaced, the entire inner cylindrical portion 4 is directly replaced as a cartridge. Configuration.

  However, the present invention is not limited to this. For example, a predetermined container (cartridge) having the ion exchange resin storage chamber 16 is removably attached to the inner cylindrical portion 12, and when the ion exchange resin 18 is replaced, only the container is replaced. It may be configured. In the case of such a configuration, the outer tubular portion 11 and the inner tubular portion 12 may be integrally formed.

  (D) In the ion exchanger 2 according to each of the above-described embodiments, the cylindrical inner cylinder portion 12 in which the internal flow path is formed in a straight line is employed as the main body cylinder portion. However, the present invention is not limited to such a perfect cylindrical shape. For example, a body having a shape that is gently curved or bent to such an extent that a coolant can flow smoothly and substantially uniformly is adopted as the main body cylinder. Is also good.

  (E) In the ion exchanger 2 according to each of the above-described embodiments, the outer cylindrical portion 11 includes the small-diameter cylindrical portion 11a located on the downstream side and the large-diameter cylindrical portion 11b located on the upstream side. The inner cylinder portion 12 is configured to have the same inner diameter in the entire area in the direction of the central axis C3, and when both are assembled, the outer peripheral surface of the peripheral wall portion 12b of the inner cylinder portion 12 and the outer cylinder portion 11 An outer peripheral flow path 21 is formed between the outer peripheral flow path 21 and the inner peripheral surface of the diameter cylindrical portion 11b.

  The present invention is not limited to this. For example, the outer cylindrical portion 11 is configured to have the same inner diameter in the entire area of the center axis C1 direction, and the inner cylindrical portion 12 has a large-diameter cylindrical portion on the downstream side and has an upstream portion on the upstream side. An outer peripheral flow path is provided between the outer peripheral surface of the peripheral wall portion of the small-diameter cylindrical portion of the inner cylindrical portion 12 and the inner peripheral surface of the outer cylindrical portion 11 in a state where both are assembled. It may be configured to be formed.

  (F) In the ion exchanger 2 according to each of the above embodiments, the ion exchange resin 18 is accommodated between the partition 15 in the direction of the central axis C3 and the ion exchange resin accommodation chamber 16 in the internal flow path of the inner cylinder 12. Although the configuration includes the flow velocity relaxation chamber 20 which is not used, the configuration is not limited to this, and the configuration may be such that the flow velocity relaxation chamber 20 is omitted.

  Further, during the flow of the cooling liquid, the ion-exchange resin 18 is flushed downstream in the ion-exchange resin storage chamber 16, and a space in which the ion-exchange resin 18 does not exist is formed in the space immediately downstream of the mesh 17 on the upstream side. Alternatively, the configuration may be as follows.

  (G) The configuration of the partition is not limited to the above embodiments. For example, in the ion exchanger 2 according to each of the above embodiments, in a state where the inner cylindrical portion 12 is assembled in the outer cylindrical portion 11, the boundary portion between the small-diameter cylindrical portion 11a and the large-diameter cylindrical portion 11b of the outer cylindrical portion 11 is formed. The partition wall 15 of the inner cylindrical portion 12 is provided below the height position, that is, below the height position of the lower communication pipe portion 5 (the lower communication passage 5a).

  However, the present invention is not limited to this. For example, under the configuration according to the second embodiment, in a state where the inner cylinder portion 12 is assembled in the outer cylinder portion 11, the height is lower than the height position of the lower communication pipe portion 5 (the lower communication passage 5 a). Alternatively, the partition 15 may be provided at a position different from each of the above embodiments, such as a configuration in which the partition 15 is located at an upper position. The longer the straight section downstream of the partition 15, the more stable the flow of the coolant.

  (H) In each of the above embodiments, the partition wall portion 15 is formed integrally with the peripheral wall portion 12b of the inner cylindrical portion 12, but is not limited thereto, and may be provided separately. Also, the material and the like are not particularly limited. For example, the partition wall 15 may be formed of a metal or resin mesh, or may be formed of a nonwoven fabric or a porous material. .

  (I) The hole formed in the partition is not limited to the above embodiments. For example, the partition wall 15 according to each of the above-described embodiments is formed with a through hole 15a that penetrates straight along the direction of the central axis C3 as a hole that allows the passage of the coolant.

  However, the present invention is not limited to this configuration. For example, as in a partition wall portion 71 shown in FIG. 6, a configuration including a through-hole 71 a formed to increase in diameter toward the downstream side of the inner cylindrical portion 12 (internal flow path) may be provided. . With this configuration, the flow rate of the cooling liquid passing through the through hole 71a can be reduced.

  (J) A structure may be provided with a uniforming means for equalizing the flow of the cooling liquid passing through the partition in the radial direction of the inner cylindrical portion 12 (internal flow path).

  For example, like the partition wall portion 72 shown in FIG. 7, the downstream side wall surface 72a is formed to be curved in a dome shape, and the thickness thereof is configured to be thinner near the periphery of the flow channel than near the center portion of the flow channel. The length of the through hole 72c formed near the peripheral edge of the flow channel may be shorter than the length of the through hole 72b formed near the central portion of the flow channel 72.

  Further, like the partition wall portion 73 shown in FIG. 8, the opening area of the through hole 73b formed near the peripheral edge of the flow channel is larger than the opening area of the through hole 73a formed near the central portion of the flow channel of the partition wall portion 73. The configuration may be such that the area is large.

  With this configuration, the resistance at the time of passage of the coolant near the peripheral edge of the partition wall is reduced, and the flow rate of the coolant is less likely to be reduced.

  (K) The configurations of the various communication paths and the inlets of the ion exchanger module 1 are not limited to the above embodiments. For example, in each of the above embodiments, the opening area (outlet) 5b of the lower communication pipe portion 5 (the lower communication passage 5a) on the side of the ion exchanger 2 is equal to the opening area (inlet) of the gas-liquid separator 3 side. 5c is formed larger than the opening area. For example, the opening area of the opening 5b on the side of the ion exchanger 2 and the opening area of the opening 5c on the side of the gas-liquid separator 3 may be substantially the same.

  In addition, a configuration in which a mesh-like mesh or the like is attached to each of the communication paths and the inflow ports may be adopted. With this configuration, the flow rate of the cooling liquid can be reduced, and the flow of the cooling liquid can be stabilized.

  (L) The configurations of the gas-liquid separator and the reserve tank are not limited to the gas-liquid separator 3 and the reserve tank 4 according to each of the above embodiments.

  For example, in each of the above embodiments, the cyclone-type gas-liquid separator 3 is employed, but the present invention is not limited to this, and another type of gas-liquid separator may be employed.

  In each of the above embodiments, the present invention is embodied as the ion exchanger module 1 in which the ion exchanger 2, the gas-liquid separator 3, and the reserve tank 4 are integrally formed. However, the present invention is not limited thereto. For example, the gas-liquid separator 3 and the reserve tank 4 may be omitted, and the present invention may be embodied as an ion exchanger alone.

  DESCRIPTION OF SYMBOLS 1 ... Ion exchanger module, 2 ... Ion exchanger (ion exchanger main part), 3 ... Gas-liquid separator, 4 ... Reserve tank, 5 ... Lower communication pipe part, 5a ... Lower communication path, 6 ... Upper communication pipe , 6a ... upper communication passage, 11 ... outer cylinder, 11a ... small diameter cylinder, 11b ... large diameter cylinder, 12 ... inner cylinder, 12a ... top wall, 12b ... peripheral wall, 15 ... partition, 15a ... Through hole, 16 ... Ion exchange resin storage chamber, 17 ... Mesh, 18 ... Ion exchange resin, 19 ... Coolant inflow chamber, 20 ... Flow mitigation chamber, 21 ... Outer peripheral flow path, 24, 25a, 25b ... Inlet, 50: cooling system, 51: fuel cell, 52: radiator, 55: bypass pipe.

Claims (6)

In a cooling system of a fuel cell system, an ion exchanger for removing ions contained in a cooling liquid by adsorbing the ions on an ion exchange resin,
A main body cylinder having a substantially linear internal flow path through which the coolant flows,
An ion exchange resin storage chamber provided in a predetermined section in the axial direction of the internal flow path and containing the ion exchange resin,
A coolant inflow chamber provided upstream of the ion exchange resin accommodating chamber in the internal flow path, and into which a coolant introduced from outside the main body cylindrical portion flows;
A partition provided in the internal flow path between the ion exchange resin accommodating chamber and the coolant inflow chamber, the partition having a plurality of holes allowing passage of the coolant. Exchanger.   2. The ion exchanger according to claim 1, further comprising a flow velocity relaxation chamber that does not store the ion exchange resin, between the ion exchange resin storage chamber and the partition in the internal flow path. 3. Equipped with a reserve tank that can store coolant,
3. The ion exchanger according to claim 1, wherein the reserve tank communicates with the coolant inflow chamber. 4. A gas-liquid separator capable of separating gas contained in the cooling liquid,
A first communication path for guiding the gas after gas-liquid separation to the reserve tank;
4. The ion exchanger according to claim 3, further comprising a second communication path that guides the coolant after the gas-liquid separation to the main body cylinder. 5.   5. The ion exchanger according to claim 1, wherein the hole of the partition wall is formed so as to increase in diameter toward a downstream side of the internal flow path. 6.   The ion exchanger according to any one of claims 1 to 5, further comprising a homogenizing means for homogenizing a flow of the cooling liquid passing through the partition.

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